Microstructure and phase evolution of ultrafine MgO doped Bi-2223/Ag tapes
文献类型：期刊论文
| 作者 | L. Hua ; J. Yoo ; J. Ko ; H. Kim ; H. Chung ; G. W. Qiao |
| 刊名 | Physica C-Superconductivity and Its Applications
 |
| 出版日期 | 1997 |
| 卷号 | 291期号:1-2页码:149-154 |
| 关键词 | Bi-2223/Ag tapes critical current density weak links flux pinning critical-current-density cu-o wires magnetic-properties single-crystal flux creep field irreversibility superconductors enhancement dependence |
| ISSN号 | 0921-4534 |
| 中文摘要 | Ultrafine MgO particles were introduced into Bi2Sr2Ca2Cu3O10/Ag (Bi-2223/Ag) tapes fabricated by the standard powder-in-tube (PIT) process. It was found that the phase transformation rate is decreased with increasing MgO concentration, Slight degradation of Bi-2223 formation rate is suggested to be of advantage for grain connectivity and grain alignment, Excessive doping and high sintering temperature resulted in bad transport properties due to severe agglomeration of MgO particles and the growth of residual secondary phase. The critical current was improved from 17 A for undoped sample to nearly 27 A for 1 wt% MgO doped sample heat-treated at 835 degrees C and/or 839 degrees C. The results of J(c)-B measurements show that the ultrafine MgO particles, as additional flux pinning centers, may strengthen flux pinning effectively. (C) 1997 Elsevier Science B.V. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37978]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. Hua,J. Yoo,J. Ko,et al. Microstructure and phase evolution of ultrafine MgO doped Bi-2223/Ag tapes[J]. Physica C-Superconductivity and Its Applications,1997,291(1-2):149-154. |
| APA | L. Hua,J. Yoo,J. Ko,H. Kim,H. Chung,&G. W. Qiao.(1997).Microstructure and phase evolution of ultrafine MgO doped Bi-2223/Ag tapes.Physica C-Superconductivity and Its Applications,291(1-2),149-154. |
| MLA | L. Hua,et al."Microstructure and phase evolution of ultrafine MgO doped Bi-2223/Ag tapes".Physica C-Superconductivity and Its Applications 291.1-2(1997):149-154. |
入库方式： OAI收割
来源：金属研究所
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